Value Collection MSC-67481762 Hex Nut 1-1/8-8 A194 2H

Product Description

The VALUE COLLECTION MSC-67481762 is a heavy hex nut designed for high-strength bolted assemblies in industrial, structural, and mechanical applications. Manufactured from A194 Grade 2H steel with a bright uncoated finish, this nut meets the requirements of ASME B18.2.2 and ASME B1.1. It features a 1-1/8-8 UN thread size with a right-hand thread direction and a 2B thread fit class. Hardness is rated at 24-35 HRC, making it well suited for high-load fastener applications. Plumbers, pipefitters, structural ironworkers, and mechanical contractors commonly specify A194 Grade 2H nuts for pressure flange connections and structural bolting.

This hex nut is used in heavy industrial and commercial settings where high-strength fasteners are required. Typical applications include pressure vessel flange bolting, pipe flange assemblies, structural steel connections, and heavy equipment mounting. The A194 Grade 2H designation is commonly paired with A193 Grade B7 threaded rod or stud bolts in pressure and temperature-rated piping systems.

Key Features

• A194 Grade 2H alloy steel construction rated at 24-35 HRC hardness
• 1-1/8-8 UN right-hand thread, 2B fit class per ASME B1.1
• Width across flats: 1-13/16 inches (1.8125 inches)
• Height: 1-7/64 inches
• Bright uncoated finish suitable for further coating or use as-is
• Conforms to ASME B18.2.2 heavy hex nut dimensional standard

Compatibility

Designed for use with 1-1/8-8 UN threaded fasteners in high-strength bolted assemblies conforming to ASME B18.2.2 and ASME B1.1 standards. Commonly paired with A193 Grade B7 studs and bolts in pressure flange and structural applications.

Installation Notes

Installation is typically performed by licensed pipefitters, structural ironworkers, or mechanical contractors. De-energize and depressurize the system completely before working on any flanged connection. Fastener torque should be applied in accordance with applicable engineering specifications and governing codes such as ASME PCC-1 for pressure flanges or applicable structural codes. Do not reuse nuts that show signs of thread damage, galling, or deformation.